Flash light



Sept. 14, 192s. 1,599,658

w. v..V DE LAPA FLASH LIGHT Filed August 16. '.1924

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Patented Sept. 14, 1926.

UNITED STATES PATENT WILLIAM V. DE LAP, OF MADISON, VJISCONSIN, ASSIGNOR TO FRENCH BATTERY COMPANY, OF MADISON, WISCONSIN. A CORPORATION' OF WISCONSIN.

FLASH LIGHT.

Application tiled August 16, 1924.

This invention relates particularly to flash-lights; and the primary object is to provide a simple, cheap, and effective con* struction, rendering unnecessary the use ot' a switch onl the side of the casing.

The invention is illustrated in its preferred embodiment in the accompanying drawing, in which- Figure 1 represents a longitudinal rsectional view of a flash-light embodying the invention, the tubular cardboard cover for the cell being shown brokenly, and the pa'lf'ts being in such position that the circuit is broken, the section being taken as indicated at line l of Fig. 3; Fig. 2, a broken longitudinal sectional view showing the parts in position with the circuit closed; and Fig. 3, a horizontal sectional view taken as indicated at line 3 of Fig. 1.

Iny the construction illustrated, A. represents a casing which maybe of any suitable material, but which is shown as composed of hard fibre, or other insulating material; B, a battery contained in the casing; C, a reflector mounted in one end of the casing, in which is mounted a lamp C', D, a lens, or glass, which bears against the outer end of the reflector and is secured in position by an annular threaded member D; E, a metallic cap applied to the other end of the casing and equipped with a central contact stud E; F, an insulating washer disposed beneath the battery B; and G, a coil-springl interposed between the cap E and the insulating disk F.

The casing is equipped at one end with a metallic ferrule l which is threaded and which has applied thereto the threaded ring, or retainer, D.

The casing is equipped at the opposite end with a metallic ferrule 2 which is threaded and which has applied thereto the cap E.

A conductor strip 3 disposed adjacent the inner surface of the casing extends from one end of the casing to the other end and is connected with the ferrules by rivets 4. The upper end of the strip 3 is curved and provides a contact 5 which is in such position that contact will be made between the refiector and the point 5 when the reflector is forced inwardly by screwing the retainer f D down. If desired, the contact 5 may remain in contact with the reflector, even when the circuit is broken at the base end of serial No. 732.499.

the rHash-light. The insulation dist: .F is provided with a central perforation b' adapted to admit the free end of the contact` stud E, so that the lower end of the battery may bear against said stud and complete the circuit. The battery B may comprise one or morevdry cells. In the illustration given, three cells 7 are illustrated, these cells being contained in the pa-steboard tube, or carton 7a. The dry cells may have the outer eic-ctrode composed of a zinc cup, the bot tom ot the cup of' the lowermost cell being adapted to contact with the upper end of the stud E. The cells are shown provided :it their upper ends with contacts 8, the uppermost one of which contacts with the cen tral contact of the lamp bulb. lVhen the rctainer D is screwed down, pressureistransinitted through the reflector and lamp to the battery, which is thereby depressed against the force orn the spring G until contact established between the upper end ot the stud E and the bottom of the battery. Contact is established, also, between the metallic reflector C and the upper end of the con-- ductor 3 when the parts are in the position shown in F ig. 2. In such position, the cir cuit is closed and the lamp is lighted. The circuit may be broken by unscrewing the retainer. Obviously, the circuit may be broken at the stud E, or at the Contact or at both points.

The construction renders unnecessary the use of a switch on the side of the casing, and, as a result, the cost of production is reduced.

The foregoing description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new, and desire to cure by Letters Patent, is:

1. A flash-light comprising a casing, cap mounted on one end of said casing.l a retainer having screw connections at the other end of said casing, a reflector and sui mounting lens engaged by said retainer, a lamp mounted in said refiector, a centre?. contact mounted in said cap, a coil-spring mounted in said cap, an insulation disk engaging said spring and having an opening through which contact may be established between said central contact and the bottom une u Conductor 'eeerienlg' snl :1 Centrali con'n'' member rgdlj Szud cap and adup'ed to 111mm l 1n amd cap, and. a minable msulw ACirie conneetlon Wlth Sad letion disk deposed above Smid Spring null inning u peli mien adapted ne receive S211l right of the Chm'netel Set venirmi Canti-Let.

' Isin@ a @up lemoif'abljy mounted on Coll-spring mounted 111 VILLLXH \f. DE LA?. 

